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Routes
Road cycling routes
United States
California
Santa Clara County
Mountain View

Tree Tunnel on Portola Road – Portola Valley loop from Mountain View

Routes
Road cycling routes
United States
California
Santa Clara County
Mountain View

Tree Tunnel on Portola Road – Portola Valley loop from Mountain View

Hard

4.7

(3616)

7,796

riders

Tree Tunnel on Portola Road – Portola Valley loop from Mountain View

03:08

62.2km

990m

Road cycling

Hard road ride. Very good fitness required. Mostly well-paved surfaces and easy to ride. The starting point of the route is accessible with public transport.

Last updated: May 1, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Foothills Nature Preserve

Foothills Open Space Preserve

Los Trancos Open Space Preserve

Monte Bello Open Space Preserve

Coal Creek Open Space Preserve

Waypoints

A

Start point

Train Station

Get Directions

1

7.30 km

Adobe Creek

Highlight • River

Adobe Creek flows from the Santa Cruz mountains to the Palo Alto Flood Basin. It used to be a perennial stream with lots of fish but has been canalised and …

Tip by

2

7.93 km

Altamont Road Vineyard

Highlight (Segment) • Structure

Winding through a quiet residential area with minimal traffic, Altamont Road is perfect for a laid-back ride or linking up with tougher routes nearby. The gentle climbs make it super …

Tip by

3

15.5 km

Page Mill Road Scenic Viewpoint

Highlight (Segment) • Viewpoint

Page Mill Road is a classic route for cyclists looking for a challenge, with its steep climbs, sharp switchbacks, and stunning views of Silicon Valley. Starting near Palo Alto and …

Tip by

4

23.7 km

Skyline Boulevard Viewpoint

Highlight • Viewpoint

A nice place to pause and catch the view before zipping down the hill on either side. There's a wooden fence where you can lean your bike for a moment.

Tip by

5

39.3 km

Tree Tunnel on Portola Road

Highlight (Segment) • Natural

I road though here after coming down La Honda road, thought it was a really pretty part of the road and it covered l connects back to Sand Hill road

Tip by

6

41.1 km

Portola Valley

Highlight (Segment) • Settlement

The ride takes you through the (very) well-to-do town of Portola Valley, which usually ranks as one of the top 10 in the US in terms of average household income. …

Tip by

B

62.2 km

End point

Train Station

Loading

Way Types & Surfaces

Way Types

38.0 km

18.8 km

5.23 km

158 m

< 100 m

< 100 m

Surfaces

61.2 km

892 m

133 m

< 100 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

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Weather

Powered by Foreca

Today

Wednesday 8 July

25°C

13°C

0 %

Additional weather tips

Max wind speed: 12.0 km/h

to get more detailed weather forecasts along your route

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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